Rajkarnikar, K. and Bhatta, G. (2008) “<i>In vitro</i> culture of <i>Piper longum</i&gt; Linn.”, Bulletin of the Department of Plant Resources, 30, pp. 76-79. Available at: https://www.nepjol.info/index.php/BDPR/article/view/1530 (Accessed: 24March2019).